LOL!
The first Heinlein story I ever read was The Puppet Masters. I was 10, and spent the next 3 or 4 years devouring everything he wrote. There was probably a space of 12 months, there, where I read nothing but RAH and CS Lewis. Between the two of them, they made me the woman and wife I am today.
Books that have recently made me think of Heinlein are John Scalzi’s “Old Man’s War”, and Eric Flint’s “1632” series (alternate history). No life changing philosophies there, but durn good reading.
LOL. I prefered Speaker for the Dead